Item Type: Bike Computer Silicone Case Material: SiliconeWeight: Approx. 13g/0.46ozApplication: for Bryton420Max Length: Approx. 8cm/3.15in Height: Approx. 2cm/0.8in 1、Silicone Material: Made of high quality soft and smooth silicone material, can protect the GPS device of the bicycle, for Bryton420.  2、Muiti Protection: Durable bike computer silicone case provides maximum protection against scratches, drops, impacts, and collisions.  3、Anti Slip Design: The bike computer silicone cover provides anti slip grip and can be quickly and easily installed on the bike handlebar.  4、Light and Portable: Lightweight and compact, very suitable for short distance city biking or long distance mountain biking.  5、Optional Colors: There are six colors to choose from according to your preference, namely black, red, yellow, green, blue and pink.